What is the SoO agreement with tribal insurgent groups that the Manipur govt withdrew from?

GS Paper 3 Syllabus: Linkages between Development and Spread of Extremism   Source: IE Context: The state government of Manipur decided to withdraw from the Suspension of Operations (SoO) agreement with two hill-based tribal militant groups.   Background: Two hill-based tribal militant groups – Kuki National Army (KNA) and Zomi Revolutionary Army (ZRA) were allegedly …